BERLIN--The SD Card Association is working on a revision to its widely used flash memory card technology that should nearly triple the data-transfer speeds of mainstream SDHC and larger-capacity SDXC cards.
The specification should be complete in the first quarter of 2011, with products coming about a year afterward, said Akihiro Kasahara, a member of the association's marketing committee, in an interview at the IFA electronics show here.
Today's SD cards have data-transfer buses with a maximum speed of 104MB per second, though actual read and write speeds are somewhat slower. The new specification, just called SD 4.0 for now, will increase that to 300MB/sec, said Kevin Schader, the association's director of communications.
Faster data-transfer speeds aren't necessary for everyone, but newer uses make them important. Flash cards are functioning more like solid-state drives in modern gadgets such as Android smartphones and now tablets, too. High-definition videocameras or video SLRs have a tremendous appetite for data. Writing to a card faster frees cameras up for the next shot or take sooner, and of course means it can be faster for people to transfer files to their computers once those support the higher speeds as well. … Read more